keep trying to do a few miles on nice flat tow path that runs alongside grand union canal in my area,you dont get much flatter or easier surface and i still have to give up after half a mile,can ride through the pain,
but left leg runs out of oxygenated blood after 4 or 5 minutes of activity.now been off work for 9 months
because clients in buildings in grounds that i maintaine kept ringing estate office to see if i was ok after watching me fall over for the 14th time that morning.
thats when i knew i had to give in.i used to do 146 miles between london and birmingham on the towpath in about 5 and a half hours(each way!!),about 50/50 hardpack paths and trackless mud,all only about 3 feet wide,and all with the risk of going splash unexpectedly in a few feet of muddy water !!